A booster serum which concentrates on the reality that sebum is released from skin that is dried up and aging, that is one of the elements that create pores stand out. The sebum & firmness & keratin treatment smoothes the area and causes a firm and wonderful skin. How to make use of: Use right after cleaning your face. Take about 7 drops (one-coin size) on a thoroughly clean palm, apply it to the whole face. Then prepare your skin with lotion.